Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings per share - basic:
Net income	$ 16,401	$ 22,097	$ 19,181	$ 31,776
Net income attributable to non-controlling interest	(26)	(35)	(54)	(71)
Net income attributable to Deluxe	16,375	22,062	19,127	31,705
Income allocated to participating securities	(12)	(16)	(19)	(23)
Income attributable to Deluxe available to common shareholders	$ 16,363	$ 22,046	$ 19,108	$ 31,682
Weighted-average shares outstanding	43,524	43,016	43,421	42,907
Earnings per share - basic	$ 0.38	$ 0.51	$ 0.44	$ 0.74
Earnings per share - diluted:
Net income	$ 16,401	$ 22,097	$ 19,181	$ 31,776
Net income attributable to non-controlling interest	(26)	(35)	(54)	(71)
Net income attributable to Deluxe	16,375	22,062	19,127	31,705
Income allocated to participating securities	0	(16)	(10)	(23)
Re-measurement of share-based awards classified as liabilities	0	(307)	(19)	(345)
Income attributable to Deluxe available to common shareholders	$ 16,375	$ 21,739	$ 19,098	$ 31,337
Weighted-average shares outstanding	43,524	43,016	43,421	42,907
Dilutive impact of potential common shares	216	269	279	349
Weighted-average shares and potential common shares outstanding	43,740	43,285	43,700	43,256
Earnings per share - diluted	$ 0.37	$ 0.50	$ 0.44	$ 0.72
Antidilutive options excluded from calculation	1,553	1,891	1,553	1,891